python regex搜索停止查找\ n caracter

Question

我需要从json字符串中抓取数据，我当前的代码是：

import re
>>> output = """
... Uploading file 'ex4-to-mq4-ps-decompiler.mp4'...
... Progress:    13.29 Mbps, 3703728 / 3703084 (100.017%) ETA       0s
... Upload successful! Video ID: tZ5xaRLhljc
... Video added to playlist 'decompile mql4' (PL2Q1nwGTMjdeAsBn6mcQ7KuFo6K7_g8_L)
... Video added to playlist 'decompile ex4' (PL2Q1nwGTMjdffMBkc6L4r6SeXnjz7eUiP)
... """
re.search("Video ID: (.+)", output, re.S).group(1)

>>> re.search("Video ID: (.+)?", output, re.S).group(1)
"tZ5xaRLhljc\nVideo added to playlist 'decompile mql4' (PL2Q1nwGTMjdeAsBn6mcQ7KuFo6K7_g8_L)\nVideo added to playlist 'decompile ex4' (PL2

我只需要提取视频tZ5xaRLhljc的ID 我该怎么做？

Answer 1

re.S是re.DOTALL，它使.与换行符\n匹配。如果删除它，.将不再与换行符匹配，并且您的代码将起作用。也许是更安全的解决方案

re.search(r"Video ID: (\w+)", output).group(1)

其中\w与所有“单词”字符（即非空格）匹配。

Answer 2

尝试一下：

re.search("Video ID: (.+)\n", output).group(1)